ethyl (E) 6-(1,3-dihydro-4-hydroxy-6-methoxy7-methyl-3-oxoisobenzofuran-5-yl)-3-(3-bromopropyl)-4-methylhex-4-enoate 、 ammonium chloride 、
sodium hexamethyldisilazane 以
四氢呋喃 、
乙酸乙酯 为溶剂,
生成 ethyl (E) 2-[-3-(4-hydroxy-1,3-dihydro-6-methoxy-7-methyl-3-oxoisobenzofuran-5-yl)-1-methylpropenyl]-cyclopentanecarboxylate